What you posted are odds for summons, valid only in the summon gate where you can pull heroes for gems or epic tokens or Atlantis coins during Atlantis event.
I was replying to your post where you mentioned lvl 20 training. The odds for particular rarity from TC20 are different than in summon gate. Devs didn’t revealed exact numbers, but the community consensus is about 75% for 3*, 20% for 4* and 5% for 5* from TC20. These numbers are consistent with my TC20 outcome from September.
There is a big thread on this topic: